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Semi-Leptonic Decays in Lattice QCD

Project SLD
Research Area Plasma & Particle Physics
Principal Investigator(s) Dr. Dirk Pleiter
Institution(s)
  • DESY-Zeuthen, Germany
  • University of Edinburgh, School of Physics, UK

Abstract

Using the latest state-of-the-art 2+1 flavour lattice QCD simulations, at light quark masses down to the physical masses, we determine the form factors for the semi-leptonic decays of the K meson and strange octet baryons. Combining these form factors with experimental data we are able to accurately determine the CKM matrix element V_us, an essential parameter in constraining the Standard Model of particle physics.

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